WO2023201768A1 - Porous layered composite oil control bearing retainer material and preparation method therefror - Google Patents

Porous layered composite oil control bearing retainer material and preparation method therefror Download PDF

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WO2023201768A1
WO2023201768A1 PCT/CN2022/089827 CN2022089827W WO2023201768A1 WO 2023201768 A1 WO2023201768 A1 WO 2023201768A1 CN 2022089827 W CN2022089827 W CN 2022089827W WO 2023201768 A1 WO2023201768 A1 WO 2023201768A1
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layer
cage material
oil
thickness
polyimide
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PCT/CN2022/089827
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French (fr)
Chinese (zh)
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李锦棒
施晨淳
夏仁良
许峥嵘
所新坤
崔玉国
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宁波大学
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L79/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen with or without oxygen or carbon only, not provided for in groups C08L61/00 - C08L77/00
    • C08L79/04—Polycondensates having nitrogen-containing heterocyclic rings in the main chain; Polyhydrazides; Polyamide acids or similar polyimide precursors
    • C08L79/08—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/221—Oxides; Hydroxides of metals of rare earth metal
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/221—Oxides; Hydroxides of metals of rare earth metal
    • C08K2003/2213—Oxides; Hydroxides of metals of rare earth metal of cerium
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
    • C08K2003/3009—Sulfides
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00—Specific properties of additives
    • C08K2201/011—Nanostructured additives
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
    • C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
    • Y02T10/86—Optimisation of rolling resistance, e.g. weight reduction 

Definitions

  • the invention relates to a porous oil-containing cage and a preparation method, specifically to a porous layered composite oil-control bearing cage material and a preparation method thereof, and belongs to the field of oil-containing material preparation.
  • Bearings are generally lubricated with grease, but in a space environment, it is difficult to apply a large amount of lubricating oil and grease to some mechanical structures, and the bearings need to work under boundary lubrication or dry friction for a long time.
  • porous polymer materials are generally used as bearing cages, and the bearings are lubricated by micro-oil lubrication.
  • Porous polymer materials have the advantages of low density and self-lubrication. They have penetrating micron-sized pores inside.
  • Lubricating oil can be stored in the micropores through vacuum oil immersion and other methods. During operation, it is released or released under the action of centrifugal force and surface tension. Absorb lubricant.
  • porosity and wear resistance are in a contradictory relationship.
  • the existence of pores weakens the strength of the polymer and reduces the hardness of the material, resulting in insufficient wear resistance under micro-oil lubrication.
  • the lubrication effect of minimum quantity lubricating oil will weaken, and the friction coefficient will increase significantly.
  • the present invention is to overcome the shortcomings of the existing technology and provide a porous layered composite oil-control bearing cage material and a preparation method thereof to solve the mutual constraints of high porosity and high wear resistance of the existing porous oil-containing cage material and the precipitation of lubricating oil. Uncontrollable problems.
  • a porous layered composite oil-control bearing cage material is prepared by layering in one step and includes a wear-resistant layer, a lipophilic layer, an oil storage layer, an oleophobic layer and an oil-sealing layer;
  • the two sides of the wear-resistant layer are paved with a lipophilic layer, an oil storage layer, an oleophobic layer and an oil-sealing layer from the inside to the outside;
  • the thickness of the wear-resistant layer accounts for 10%-20% of the total thickness of the cage material.
  • the wear-resistant layer contains 0.5%-3% by mass of anti-wear components, and the remaining components are polyamide with a particle size of 5-20 ⁇ m. imine;
  • the thickness of the single-layer lipophilic layer accounts for 5%-15% of the total thickness of the cage material.
  • the lipophilic layer contains 0.5%-3% lipophilic components in terms of mass percentage, and the remaining components are polyamide with a particle size of 20-30 ⁇ m. imine;
  • the thickness of the single-layer oil storage layer accounts for 25%-40% of the total thickness of the cage material, and the component of the oil storage layer is polyimide with a particle size of 50-80 ⁇ m;
  • the thickness of a single oleophobic layer accounts for 3%-8% of the total thickness of the cage material; the oleophobic layer contains 3%-10% oleophobic components by mass, and the remaining components are polyimide with a particle size less than 10um amine;
  • the thickness of a single layer of sealing oil layer accounts for 3%-8% of the total thickness of the cage material; the component of the sealing oil layer is polyimide with a particle size less than 10um.
  • the present invention has the following effects:
  • the porous cage material is divided into nine functional layers. Through the different formulas of each functional layer, the precipitation of lubricating oil is controlled and the utilization rate of lubricating oil is improved. Compared with homogeneous porous materials of the same density, the present invention increases the porosity of the porous layered composite material by 20-30%, reduces the wear rate by more than 50%, increases the oil retention rate by 20-30%, and increases the service life by more than 30%.
  • the preparation method of the porous layered composite oil-control bearing cage material includes the following steps:
  • each layer According to the thickness ratio of each layer and the mass percentage of the components, weigh powders of different qualities, lay them in layers in the mold, and flatten each layer after it is laid;
  • the sintering temperature is 320°C-360°C, and the heat preservation is 45min-180min;
  • the present invention has the following effects:
  • the preparation method of the present invention can regulate the precipitation of lubricating oil and improve the utilization rate of lubricating oil through different functional layer formulas.
  • the porosity of the porous layered composite oil-control bearing cage material prepared by the invention is increased by 20-30%, the wear rate is reduced by more than 50%, the oil content is increased by more than 10%, the oil retention rate is increased by 20-30%, and the service life is increased by more than 30%. .
  • Figure 1 is a schematic diagram of the porous layered composite oil-control bearing cage material of the present invention.
  • a porous layered composite oil-control bearing cage material is prepared by layering in one step and includes a wear-resistant layer 1, a oleophilic layer 2, an oil storage layer 3, an oleophobic layer 4 and an oil sealing layer 5;
  • the two sides of the wear-resistant layer 1 are paved with a lipophilic layer 2, an oil storage layer 3, an oleophobic layer 4 and an oil sealing layer 5 from the inside to the outside;
  • the thickness of the wear-resistant layer 1 accounts for 10%-20% of the total thickness of the cage material.
  • the wear-resistant layer contains 0.5%-3% by mass of anti-wear components, and the remaining components have a particle size of 5-20 ⁇ m. Polyimide, the porosity in this particle size range is 5%-10%;
  • the thickness of the single-layer lipophilic layer 2 accounts for 5%-15% of the total thickness of the cage material.
  • the lipophilic layer contains 0.5%-3% lipophilic components in terms of mass percentage, and the remaining components have a particle size of 20-30 ⁇ m.
  • the thickness of the single oil storage layer 3 accounts for 25%-40% of the total thickness of the cage material.
  • the component of the oil storage layer is polyimide with a particle size of 50-80 ⁇ m; the porosity of the polyimide in this particle size range The maximum is 20%-30%;
  • the thickness of the single-layer oleophobic layer 4 accounts for 3%-8% of the total thickness of the cage material; the oleophobic layer contains 3%-10% oleophobic components in terms of mass percentage, and the remaining components are polymers with particle sizes less than 10um. Imide; the porosity of polyimide in this particle size range is 5%-8%;
  • the thickness of the single-layer sealing oil layer 5 accounts for 3%-8% of the total thickness of the cage material; the component of the sealing oil layer is polyimide with a particle size less than 10um, and the porosity of the polyimide in this particle size range is 5 %-8%.
  • the wear-resistant layer 1 of this embodiment is located in the middle, and the cage material is conducive to intelligently regulating the precipitation of lubricating oil.
  • the porosity of the porous layered composite material of this embodiment is increased by 20- 30%, the wear rate is reduced by more than 50%, and the oil retention rate is increased by 20-30%.
  • the polyimide is one or a combination of isophenylene type, ether anhydride type, and ketone anhydride type.
  • the anti-wear component is one or a combination of polyetheretherketone, nano-bronze powder, nano-molybdenum disulfide, nano-graphene, and nano-diamond.
  • the lipophilic component is lanthanum oxide, cerium oxide, praseodymium oxide, neodymium oxide, lanthanum fluoride, cerium fluoride, lanthanum cerium fluoride, praseodymium fluoride, neodymium fluoride, lanthanum neodymium fluoride One or a combination of several.
  • the oleophobic component is one or a combination of polytetrafluoroethylene and fluorine-containing polyurethane.
  • the combined use of the components of the above functional layer ensures the high porosity and high wear resistance of the porous cage material at the same time.
  • the lubricating oil is not easily lost and the utilization rate is high.
  • the thickness of the wear-resistant layer 1 accounts for 10% of the total thickness of the cage material.
  • the wear-resistant layer 1 contains 2% by mass of anti-wear components, and the remaining components are polyimide with a particle size of 5-20 ⁇ m;
  • the polyimide is homophenylene type, and the anti-wear component is graphene, nano-molybdenum disulfide or nano-bronze powder;
  • the thickness of the single-layer lipophilic layer 2 accounts for 10% of the total thickness of the cage material.
  • the lipophilic layer 2 contains 3% lipophilic components in terms of mass percentage.
  • the remaining components are polyimide with a particle size of 20-30 ⁇ m.
  • the polyimide is of homophenylene type, and the lipophilic component is a mixture of lanthanum oxide, cerium oxide, praseodymium oxide, lanthanum fluoride, cerium fluoride and praseodymium fluoride;
  • the thickness of the single oil storage layer 3 accounts for The percentage of the total thickness of the cage material is 30%, and the oil storage layer 3 is polyimide with a particle size of 50-80 ⁇ m;
  • the thickness of the single-layer oleophobic layer 4 accounts for 5% of the total thickness of the cage material, and the oleophobic layer 4 contains a mass percentage 5% of the oleophobic component is calculated, and the remaining components are polyimide with a particle size
  • the polyimide is a homophenylene type, and the oleophobic component is polytetrafluoroethylene;
  • the thickness of the sealing oil layer 5 accounts for 5% of the total thickness of the cage material, and the sealing oil layer 5 is polyimide powder with a particle size less than 10 ⁇ m.
  • the oil content of the porous layered composite oil-control bearing cage material of this embodiment is 15-17%, the oil retention rate is 95%, the friction coefficient is 0.03-0.04, and the wear rate is 0.8 ⁇ 10 -10 mm 3 /Nm-1.0 ⁇ 10 -10 mm 3 /Nm.
  • Another embodiment also provides a method for preparing a porous layered composite oil-control bearing cage material, which includes the following steps:
  • each layer According to the thickness ratio of each layer and the mass percentage of the components, weigh the powders of different qualities and lay them in layers in the mold. After each layer is laid, use a tool to flatten it gently; when laying the layers, seal them from bottom to top.
  • the sintering temperature is 320°C-360°C, and the heat preservation is 45min-180min;
  • the thickness of the wear-resistant layer 1 accounts for 10%-20% of the total thickness of the cage material, the wear-resistant layer contains 0.5%-3% of the anti-wear component in terms of mass percentage, and the remaining components It is divided into polyimide with a particle size of 5-20 ⁇ m;
  • the thickness of the single-layer lipophilic layer 2 accounts for 5%-15% of the total thickness of the cage material.
  • the lipophilic layer 2 contains 0.5%-3% lipophilic components in mass percentage, and the remaining components have a particle size of 20-30 ⁇ m. of polyimide;
  • the thickness of the single-layer oil storage layer 3 accounts for 25%-40% of the total thickness of the cage material, and the component of the oil storage layer 3 is polyimide with a particle size of 50-80 ⁇ m;
  • the thickness of the single-layer oleophobic layer 4 accounts for 3%-8% of the total thickness of the cage material; the oleophobic layer 4 contains 3%-10% oleophobic components in terms of mass percentage, and the remaining components contain particles with a particle size less than 10um Polyimide;
  • the thickness of the single-layer sealing oil layer 5 accounts for 3%-8% of the total thickness of the cage material; the component of the sealing oil layer 5 is polyimide with a particle size less than 10um.
  • each layer According to the thickness ratio of each layer and the mass percentage of the components, weigh powders of different qualities, lay them in layers in the mold, and flatten them with tools after each layer is laid;
  • the sintering temperature is 335°C and the temperature is kept for 90 minutes;
  • the porous layered composite oil-control bearing cage material prepared in this example has an oil content of 18%, an oil retention rate of 95%, a friction coefficient of 0.03-0.05, and a wear rate of 1.0 ⁇ 10 -10 mm 3 /Nm.

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Rolling Contact Bearings (AREA)
  • Sliding-Contact Bearings (AREA)

Abstract

A porous layered composite oil control bearing retainer material and a preparation method therefor. The retainer material is prepared by means of layered laying and one-time forming, and comprises a wear-resistant layer, an oleophylic layer, an oil storage layer, an oleophobic layer, and an oil sealing layer. The oleophylic layer, the oil storage layer, the oleophobic layer and the oil sealing layer are paved on two side surfaces of the wear-resistant layer from inside to outside respectively. The preparation method comprises the following steps: 1) weighing powders with different masses according to the thickness proportion of each layer and the mass percentage of the components, laying the powders in a mold in a layered manner, and flattening the powders after each-layer laying is finished; 2) after the powders are filled, placing the mold on a vibration platform for vibration mixing; 3) placing the mold on a hydraulic machine, performing pre-pressing in a bidirectional pressurizing manner, performing pressure relief after pressure maintenance, pressing the mold to a constant volume, and fixing the mold; 4) putting the mold into a sintering furnace for sintering; and 5) demolding to obtain the porous layered composite oil control bearing retainer material. The material of the present invention has the advantages of high porosity, good wear resistance, low friction coefficient and long service life.

Description

一种多孔分层复合控油轴承保持架材料及其制备方法A porous layered composite oil-control bearing cage material and its preparation method 技术领域Technical field
本发明涉及多孔含油保持架及制备方法，具体涉及一种多孔分层复合控油轴承保持架材料及其制备方法，属于含油材料制备领域。The invention relates to a porous oil-containing cage and a preparation method, specifically to a porous layered composite oil-control bearing cage material and a preparation method thereof, and belongs to the field of oil-containing material preparation.
背景技术Background technique
轴承一般采用油脂润滑，但在空间环境中，某些机械结构难以大量应用润滑油和润滑脂，轴承需要在边界润滑或干摩擦状态下长期工作。目前，空间高速运动部件的轴系中，一般采用多孔聚合物材料作为轴承保持架，以微量油润滑的方式实现轴承的润滑。多孔聚合物材料具有密度小、自润滑等优点，其内部具有贯通的微米级孔隙，通过真空浸油等方式可将润滑油贮存在微孔中，工作时在离心力和表面张力的作用下释放或吸收润滑油。对于传统均质多孔聚合物材料来说，孔隙率与耐磨性是此消彼长的矛盾关系。孔隙率越高，贮油量越大，但孔隙的存在削弱了聚合物的强度，使材料硬度下降，导致其在微油润滑下的耐磨性不足，磨损到一定程度后，随着磨屑的累积和表面粗糙度的增加，微量润滑油的润滑效果减弱，摩擦系数会大幅增加。相反地，孔隙率越低，材料的强度和硬度越高，耐磨性越好，但只能存贮少量润滑油，不能满足长效润滑的需求。Bearings are generally lubricated with grease, but in a space environment, it is difficult to apply a large amount of lubricating oil and grease to some mechanical structures, and the bearings need to work under boundary lubrication or dry friction for a long time. At present, in the shaft system of high-speed moving parts in space, porous polymer materials are generally used as bearing cages, and the bearings are lubricated by micro-oil lubrication. Porous polymer materials have the advantages of low density and self-lubrication. They have penetrating micron-sized pores inside. Lubricating oil can be stored in the micropores through vacuum oil immersion and other methods. During operation, it is released or released under the action of centrifugal force and surface tension. Absorb lubricant. For traditional homogeneous porous polymer materials, porosity and wear resistance are in a contradictory relationship. The higher the porosity, the greater the oil storage capacity. However, the existence of pores weakens the strength of the polymer and reduces the hardness of the material, resulting in insufficient wear resistance under micro-oil lubrication. After wear to a certain extent, along with the wear debris As the accumulation and surface roughness increase, the lubrication effect of minimum quantity lubricating oil will weaken, and the friction coefficient will increase significantly. On the contrary, the lower the porosity, the higher the strength and hardness of the material, and the better the wear resistance, but it can only store a small amount of lubricating oil and cannot meet the needs of long-term lubrication.
发明内容Contents of the invention
本发明是为克服现有技术不足，提供一种多孔分层复合控油轴承保持架材料及其制备方法，以解决现有多孔含油保持架材料高孔隙率和高耐磨性相互制约以及润滑油析出不可调控的问题。The present invention is to overcome the shortcomings of the existing technology and provide a porous layered composite oil-control bearing cage material and a preparation method thereof to solve the mutual constraints of high porosity and high wear resistance of the existing porous oil-containing cage material and the precipitation of lubricating oil. Uncontrollable problems.
一种多孔分层复合控油轴承保持架材料采用分层铺设一次成型制备而成，包含耐磨层、亲油层、贮油层、疏油层和封油层；A porous layered composite oil-control bearing cage material is prepared by layering in one step and includes a wear-resistant layer, a lipophilic layer, an oil storage layer, an oleophobic layer and an oil-sealing layer;
耐磨层两侧面分别由内至外铺压有亲油层、贮油层、疏油层和封油层；The two sides of the wear-resistant layer are paved with a lipophilic layer, an oil storage layer, an oleophobic layer and an oil-sealing layer from the inside to the outside;
耐磨层厚度占保持架材料总厚度的百分比为10％-20％，耐磨层包含质量百分比计的0.5％-3％的抗磨组分，其余组分是粒度为5-20μm的聚酰亚胺；The thickness of the wear-resistant layer accounts for 10%-20% of the total thickness of the cage material. The wear-resistant layer contains 0.5%-3% by mass of anti-wear components, and the remaining components are polyamide with a particle size of 5-20 μm. imine;
单层亲油层厚度占保持架材料总厚度的百分比为5％-15％，亲油层包含质量百分比计的0.5％-3％的亲油组分，其余组分是粒度为20-30μm的聚酰亚胺；The thickness of the single-layer lipophilic layer accounts for 5%-15% of the total thickness of the cage material. The lipophilic layer contains 0.5%-3% lipophilic components in terms of mass percentage, and the remaining components are polyamide with a particle size of 20-30 μm. imine;
单层贮油层厚度占保持架材料总厚度的百分比为25％-40％，贮油层组分是粒度为50-80μm的聚酰亚胺；The thickness of the single-layer oil storage layer accounts for 25%-40% of the total thickness of the cage material, and the component of the oil storage layer is polyimide with a particle size of 50-80 μm;
单层疏油层厚度占保持架材料总厚度的百分比为3％-8％；疏油层包含质量百分比计的3％-10％的疏油组分，其余组分是含有粒度小于10um的聚酰亚胺；The thickness of a single oleophobic layer accounts for 3%-8% of the total thickness of the cage material; the oleophobic layer contains 3%-10% oleophobic components by mass, and the remaining components are polyimide with a particle size less than 10um amine;
单层封油层厚度占保持架材料总厚度的比例为3％-8％；封油层组分是粒度小于10um的聚酰亚胺。The thickness of a single layer of sealing oil layer accounts for 3%-8% of the total thickness of the cage material; the component of the sealing oil layer is polyimide with a particle size less than 10um.
本发明与现有技术相比具有以下效果：Compared with the prior art, the present invention has the following effects:
将多孔保持架材料分为九个功能层，通过各功能层配方的不同，调控润滑油的析出，提高润滑油利用率。本发明与相同密度的均质多孔材料相比，多孔分层复合材料的孔隙率提高20-30％，磨损率降低50％以上，含油保持率提高20-30％，寿命提高30％以上。The porous cage material is divided into nine functional layers. Through the different formulas of each functional layer, the precipitation of lubricating oil is controlled and the utilization rate of lubricating oil is improved. Compared with homogeneous porous materials of the same density, the present invention increases the porosity of the porous layered composite material by 20-30%, reduces the wear rate by more than 50%, increases the oil retention rate by 20-30%, and increases the service life by more than 30%.
多孔分层复合控油轴承保持架材料的制备方法包含如下步骤：The preparation method of the porous layered composite oil-control bearing cage material includes the following steps:
1)、根据各层厚度占比及组分质量百分比，称取不同质量的粉料，分层铺设在模具中，每层铺完后压平；1). According to the thickness ratio of each layer and the mass percentage of the components, weigh powders of different qualities, lay them in layers in the mold, and flatten each layer after it is laid;
2)、粉料填装完毕后，将模具放在振动平台上，振动20-60秒，使各层材料界面之间自然混合；2) After the powder filling is completed, place the mold on the vibration platform and vibrate for 20-60 seconds to allow natural mixing between the material interfaces of each layer;
3)、将模具放在液压机上，采用双向加压的方式，在3-10MPa的压力下进行预压制，保压5-30min后卸压，再将模具压制到定容的体积，并固定；3) Place the mold on the hydraulic press, use bidirectional pressure, pre-press at a pressure of 3-10MPa, maintain the pressure for 5-30 minutes and then release the pressure, then press the mold to a constant volume and fix it;
4)、将模具放入烧结炉进行烧结，烧结温度320℃-360℃，保温45min-180min；4) Put the mold into the sintering furnace for sintering, the sintering temperature is 320℃-360℃, and the heat preservation is 45min-180min;
5)、脱模，得到多孔分层复合控油轴承保持架材料。5) Demold and obtain the porous layered composite oil-control bearing cage material.
本发明与现有技术相比具有以下效果：Compared with the prior art, the present invention has the following effects:
本发明的制备方法得到通过不同功能层配方，调控润滑油的析出，提高润滑油利用率。本发明制得多孔分层复合控油轴承保持架材料的孔隙率提高20-30％，磨损率降低50％以上，含油率提高10％以上，含油保持率提高20-30％，寿命提高30％以上。The preparation method of the present invention can regulate the precipitation of lubricating oil and improve the utilization rate of lubricating oil through different functional layer formulas. The porosity of the porous layered composite oil-control bearing cage material prepared by the invention is increased by 20-30%, the wear rate is reduced by more than 50%, the oil content is increased by more than 10%, the oil retention rate is increased by 20-30%, and the service life is increased by more than 30%. .
下面结合附图和实施例对本发明的技术方案作进一步地说明：The technical solution of the present invention will be further described below in conjunction with the accompanying drawings and examples:
附图说明Description of the drawings
图1为本发明多孔分层复合控油轴承保持架材料示意图。Figure 1 is a schematic diagram of the porous layered composite oil-control bearing cage material of the present invention.
具体实施方式Detailed ways
本实施方式的一种多孔分层复合控油轴承保持架材料采用分层铺设一次成型制备而成，包含耐磨层1、亲油层2、贮油层3、疏油层4和封油层5；In this embodiment, a porous layered composite oil-control bearing cage material is prepared by layering in one step and includes a wear-resistant layer 1, a oleophilic layer 2, an oil storage layer 3, an oleophobic layer 4 and an oil sealing layer 5;
耐磨层1两侧面分别由内至外铺压有亲油层2、贮油层3、疏油层4和封油层5；The two sides of the wear-resistant layer 1 are paved with a lipophilic layer 2, an oil storage layer 3, an oleophobic layer 4 and an oil sealing layer 5 from the inside to the outside;
耐磨层1的厚度占保持架材料总厚度的百分比为10％-20％，耐磨层包含质量百分比计的0.5％-3％的抗磨组分，其余组分是粒度为5-20μm的聚酰亚胺，该粒度范围下的孔隙率为5％-10％；The thickness of the wear-resistant layer 1 accounts for 10%-20% of the total thickness of the cage material. The wear-resistant layer contains 0.5%-3% by mass of anti-wear components, and the remaining components have a particle size of 5-20 μm. Polyimide, the porosity in this particle size range is 5%-10%;
单层亲油层2的厚度占保持架材料总厚度的百分比为5％-15％，亲油层包含质量百分比计的0.5％-3％的亲油组分，其余组分是粒度为20-30μm的聚酰亚胺；该粒度范围下的聚酰亚胺的孔隙率为12％-18％；The thickness of the single-layer lipophilic layer 2 accounts for 5%-15% of the total thickness of the cage material. The lipophilic layer contains 0.5%-3% lipophilic components in terms of mass percentage, and the remaining components have a particle size of 20-30 μm. Polyimide; the porosity of polyimide in this particle size range is 12%-18%;
单层贮油层3的厚度占保持架材料总厚度的百分比为25％-40％，贮油层组分是粒度为50-80μm的聚酰亚胺；该粒度范围下的聚酰亚胺的孔隙率最大为20％-30％；The thickness of the single oil storage layer 3 accounts for 25%-40% of the total thickness of the cage material. The component of the oil storage layer is polyimide with a particle size of 50-80 μm; the porosity of the polyimide in this particle size range The maximum is 20%-30%;
单层疏油层4的厚度占保持架材料总厚度的百分比为3％-8％；疏油层包含质量百分比计的3％-10％的疏油组分，其余组分是含有粒度小于10um的聚酰亚胺；该粒度范围下的聚酰亚胺的孔隙率为5％-8％；The thickness of the single-layer oleophobic layer 4 accounts for 3%-8% of the total thickness of the cage material; the oleophobic layer contains 3%-10% oleophobic components in terms of mass percentage, and the remaining components are polymers with particle sizes less than 10um. Imide; the porosity of polyimide in this particle size range is 5%-8%;
单层封油层5的厚度占保持架材料总厚度的百分比为3％-8％；封油层组分是粒度小于10um的聚酰亚胺，该粒度范围下的聚酰亚胺的孔隙率为5％-8％。The thickness of the single-layer sealing oil layer 5 accounts for 3%-8% of the total thickness of the cage material; the component of the sealing oil layer is polyimide with a particle size less than 10um, and the porosity of the polyimide in this particle size range is 5 %-8%.
该实施方式的耐磨层1位于中间位置，该保持架材料有利于智能调控润滑油的析出，与相同密度的均质多孔材料相比，本实施方式多孔分层复合材料的孔隙率提高20-30％，磨损率降低50％以上，含油保持率提高20-30％。The wear-resistant layer 1 of this embodiment is located in the middle, and the cage material is conducive to intelligently regulating the precipitation of lubricating oil. Compared with homogeneous porous materials of the same density, the porosity of the porous layered composite material of this embodiment is increased by 20- 30%, the wear rate is reduced by more than 50%, and the oil retention rate is increased by 20-30%.
可选地，所述的聚酰亚胺为均苯型、醚酐型、酮酐型的一种或几种的组合。Optionally, the polyimide is one or a combination of isophenylene type, ether anhydride type, and ketone anhydride type.
可选地，所述的抗磨组分为聚醚醚酮、纳米青铜粉、纳米二硫化钼、纳米石墨烯、纳米金刚石中的一种或几种的组合。Optionally, the anti-wear component is one or a combination of polyetheretherketone, nano-bronze powder, nano-molybdenum disulfide, nano-graphene, and nano-diamond.
可选地，所述的亲油组分为氧化镧、氧化铈、氧化镨、氧化钕、氟化镧、氟化铈、氟化镧铈、氟化镨、氟化钕、氟化镧钕的一种或几种的组合。Alternatively, the lipophilic component is lanthanum oxide, cerium oxide, praseodymium oxide, neodymium oxide, lanthanum fluoride, cerium fluoride, lanthanum cerium fluoride, praseodymium fluoride, neodymium fluoride, lanthanum neodymium fluoride One or a combination of several.
可选地，所述的疏油组分为聚四氟乙烯、含氟聚氨酯中的一种或两种的组合。上述功能层的组分组合使用，使得多孔保持架材料高孔隙率与高耐磨性能得到同时保证，润滑油不容易散失，利用率高。Optionally, the oleophobic component is one or a combination of polytetrafluoroethylene and fluorine-containing polyurethane. The combined use of the components of the above functional layer ensures the high porosity and high wear resistance of the porous cage material at the same time. The lubricating oil is not easily lost and the utilization rate is high.
进一步地，基于上述可选方案，优选地：Further, based on the above options, preferably:
实施例1Example 1
耐磨层1的厚度占保持架材料总厚度的百分比为10％，耐磨层1包含质量百分比计的2％的抗磨组分，其余组分是粒度为5-20μm的聚酰亚胺；可选地，所述的聚酰亚胺为均苯型，抗磨组分为石墨烯、纳米二硫化钼或者纳米青铜粉；The thickness of the wear-resistant layer 1 accounts for 10% of the total thickness of the cage material. The wear-resistant layer 1 contains 2% by mass of anti-wear components, and the remaining components are polyimide with a particle size of 5-20 μm; Optionally, the polyimide is homophenylene type, and the anti-wear component is graphene, nano-molybdenum disulfide or nano-bronze powder;
单层亲油层2厚度占保持架材料总厚度的百分比为10％，亲油层2包含质量百分比计的3％的亲油组分，其余组分是粒度为20-30μm的聚酰亚胺，可选地，所述的聚酰亚胺为均苯型，亲油组分为氧化镧、氧化铈、氧化镨、氟化镧、氟化铈和氟化镨的混合物；单层贮油层3厚度占保持架材料总厚度的百分比为30％，贮油层3为粒度为50-80μm的聚酰亚胺；单层疏油层4厚度占保持架材料总厚度的百分比为5％，疏油层4包含质量百分比计的5％ 的疏油组分，其余组分是粒度小于10um的聚酰亚胺，可选地，所述的聚酰亚胺为均苯型，疏油组分为聚四氟乙烯；单层封油层5厚度占保持架材料总厚度的百分比为5％，封油层5为粒度小于10um的聚酰亚胺粉料。The thickness of the single-layer lipophilic layer 2 accounts for 10% of the total thickness of the cage material. The lipophilic layer 2 contains 3% lipophilic components in terms of mass percentage. The remaining components are polyimide with a particle size of 20-30 μm. Optionally, the polyimide is of homophenylene type, and the lipophilic component is a mixture of lanthanum oxide, cerium oxide, praseodymium oxide, lanthanum fluoride, cerium fluoride and praseodymium fluoride; the thickness of the single oil storage layer 3 accounts for The percentage of the total thickness of the cage material is 30%, and the oil storage layer 3 is polyimide with a particle size of 50-80 μm; the thickness of the single-layer oleophobic layer 4 accounts for 5% of the total thickness of the cage material, and the oleophobic layer 4 contains a mass percentage 5% of the oleophobic component is calculated, and the remaining components are polyimide with a particle size less than 10um. Optionally, the polyimide is a homophenylene type, and the oleophobic component is polytetrafluoroethylene; The thickness of the sealing oil layer 5 accounts for 5% of the total thickness of the cage material, and the sealing oil layer 5 is polyimide powder with a particle size less than 10 μm.
本实施例的多孔分层复合控油轴承保持架材料的含油率为15-17％，含油保持率为95％，摩擦系数为0.03-0.04，磨损率为0.8×10 -10mm 3/Nm-1.0×10 -10mm 3/Nm。 The oil content of the porous layered composite oil-control bearing cage material of this embodiment is 15-17%, the oil retention rate is 95%, the friction coefficient is 0.03-0.04, and the wear rate is 0.8×10 -10 mm 3 /Nm-1.0 ×10 -10 mm 3 /Nm.
另一个实施方式还提供多孔分层复合控油轴承保持架材料的制备方法，包含如下步骤：Another embodiment also provides a method for preparing a porous layered composite oil-control bearing cage material, which includes the following steps:
1)、根据各层厚度占比及组分质量百分比，称取不同质量的粉料，分层铺设在模具中，每层铺完后用工具轻轻压平；铺层时由下至上是封油层2、疏油层3、贮油层4、亲油层5、耐磨层1、亲油层2、贮油层3、疏油层4和封油层5；1). According to the thickness ratio of each layer and the mass percentage of the components, weigh the powders of different qualities and lay them in layers in the mold. After each layer is laid, use a tool to flatten it gently; when laying the layers, seal them from bottom to top. Oil layer 2, oleophobic layer 3, oil storage layer 4, lipophilic layer 5, wear-resistant layer 1, lipophilic layer 2, oil storage layer 3, oleophobic layer 4 and oil sealing layer 5;
2)、粉料填装完毕后，将模具放在振动平台上，振动20-60秒，使各层材料界面之间自然混合；2) After the powder filling is completed, place the mold on the vibration platform and vibrate for 20-60 seconds to allow natural mixing between the material interfaces of each layer;
3)、将模具放在液压机上，采用双向加压的方式，在3-10MPa的压力下进行预压制，保压5-30min后卸压，再将模具压制到定容的体积，用螺栓固定体积；3) Place the mold on the hydraulic press, use bidirectional pressure, pre-press at a pressure of 3-10MPa, maintain the pressure for 5-30 minutes and then release the pressure, then press the mold to a constant volume and fix it with bolts. volume;
4)、将模具放入烧结炉进行烧结，烧结温度320℃-360℃，保温45min-180min；4) Put the mold into the sintering furnace for sintering, the sintering temperature is 320℃-360℃, and the heat preservation is 45min-180min;
5)、脱模，得到多孔分层复合控油轴承保持架材料。5) Demold and obtain the porous layered composite oil-control bearing cage material.
可选地，铺层时，耐磨层1的厚度占保持架材料总厚度的百分比为10％-20％，耐磨层包含质量百分比计的0.5％-3％的抗磨组分，其余组分是粒度为5-20μm的聚酰亚胺；Optionally, when laying the layers, the thickness of the wear-resistant layer 1 accounts for 10%-20% of the total thickness of the cage material, the wear-resistant layer contains 0.5%-3% of the anti-wear component in terms of mass percentage, and the remaining components It is divided into polyimide with a particle size of 5-20 μm;
单层亲油层2的厚度占保持架材料总厚度的百分比为5％-15％，亲油层2包含质量百分比计的0.5％-3％的亲油组分，其余组分是粒度为20-30μm的聚酰亚胺；The thickness of the single-layer lipophilic layer 2 accounts for 5%-15% of the total thickness of the cage material. The lipophilic layer 2 contains 0.5%-3% lipophilic components in mass percentage, and the remaining components have a particle size of 20-30 μm. of polyimide;
单层贮油层3的厚度占保持架材料总厚度的百分比为25％-40％，贮油层3组分是粒度为50-80μm的聚酰亚胺；The thickness of the single-layer oil storage layer 3 accounts for 25%-40% of the total thickness of the cage material, and the component of the oil storage layer 3 is polyimide with a particle size of 50-80 μm;
单层疏油层4的厚度占保持架材料总厚度的百分比为3％-8％；疏油层4包含质量百分比计的3％-10％的疏油组分，其余组分是含有粒度小于10um的聚酰亚胺；The thickness of the single-layer oleophobic layer 4 accounts for 3%-8% of the total thickness of the cage material; the oleophobic layer 4 contains 3%-10% oleophobic components in terms of mass percentage, and the remaining components contain particles with a particle size less than 10um Polyimide;
单层封油层5的厚度占保持架材料总厚度的比例为3％-8％；封油层5组分是粒度小于10um的聚酰亚胺。The thickness of the single-layer sealing oil layer 5 accounts for 3%-8% of the total thickness of the cage material; the component of the sealing oil layer 5 is polyimide with a particle size less than 10um.
可选地，振动25-45秒，使各层材料界面之间自然混合，在5-10MPa的压力下进行预压制，保压5-20min后卸压，烧结温度为300℃-350℃，保温55min-160min。Optionally, vibrate for 25-45 seconds to allow natural mixing between the material interfaces of each layer, pre-press under a pressure of 5-10MPa, hold the pressure for 5-20 minutes and then release the pressure, the sintering temperature is 300℃-350℃, and the heat preservation 55min-160min.
进一步地，基于上述实施方式，优选地：Further, based on the above embodiments, preferably:
实施例2Example 2
1)、根据各层厚度占比及组分质量百分比，称取不同质量的粉料，分层铺设在模具中，每层铺完后用工具压平；1). According to the thickness ratio of each layer and the mass percentage of the components, weigh powders of different qualities, lay them in layers in the mold, and flatten them with tools after each layer is laid;
2)、粉料填装完毕后，将模具放在振动平台上，振动30秒，使各层材料界面之间自然混合；2) After the powder filling is completed, place the mold on the vibration platform and vibrate for 30 seconds to allow natural mixing between the material interfaces of each layer;
3)、将模具放在液压机上，采用双向加压的方式，在10MPa的压力下进行预压制，保压15min后卸压，再将模具压制到定容的体积，用螺栓固定体积；3) Place the mold on the hydraulic press, use bidirectional pressure, pre-press at a pressure of 10MPa, maintain the pressure for 15 minutes and then release the pressure, then press the mold to a constant volume, and fix the volume with bolts;
4)、将模具放入烧结炉进行烧结，烧结温度335℃，保温90min；4). Put the mold into the sintering furnace for sintering. The sintering temperature is 335°C and the temperature is kept for 90 minutes;
5)、脱模，得到多孔分层复合控油轴承保持架材料。5) Demold and obtain the porous layered composite oil-control bearing cage material.
本实施例制备的多孔分层复合控油轴承保持架材料的含油率为18％，含油保持率为95％，摩擦系数为0.03～0.05，磨损率为1.0×10 -10mm 3/Nm。 The porous layered composite oil-control bearing cage material prepared in this example has an oil content of 18%, an oil retention rate of 95%, a friction coefficient of 0.03-0.05, and a wear rate of 1.0×10 -10 mm 3 /Nm.
本发明已以较佳实施案例揭示如上，然而并非用以限定本发明，任何熟悉本专业的技术人员，在不脱离本发明技术方案范围内，当可以利用上述揭示的结构及技术内容做出些许的更动或修饰为等同变化的等效实施案例，均仍属本发明技术方案范围。The present invention has been disclosed above with preferred implementation examples, but this is not intended to limit the present invention. Any skilled person familiar with the art can make use of the structure and technical content disclosed above without departing from the scope of the technical solution of the present invention. Changes or modifications to equivalent implementation examples of equivalent changes still fall within the scope of the technical solution of the present invention.

Claims (10)

  1. 一种多孔分层复合控油轴承保持架材料，其特征在于：所述保持架材料采用分层铺设一次成型制备而成，包含耐磨层、亲油层、贮油层、疏油层和封油层；A porous layered composite oil-control bearing cage material, characterized in that: the cage material is prepared by layering in one step and includes a wear-resistant layer, a lipophilic layer, an oil storage layer, an oleophobic layer and an oil-sealing layer;
    耐磨层两侧面分别由内至外铺压有亲油层、贮油层、疏油层和封油层；The two sides of the wear-resistant layer are paved with a lipophilic layer, an oil storage layer, an oleophobic layer and an oil-sealing layer from the inside to the outside;
    耐磨层的厚度占保持架材料总厚度的百分比为10％-20％，耐磨层包含质量百分比计的0.5％-3％的抗磨组分，其余组分是粒度为5-20μm的聚酰亚胺；The thickness of the wear-resistant layer accounts for 10%-20% of the total thickness of the cage material. The wear-resistant layer contains 0.5%-3% by mass of anti-wear components, and the remaining components are polyethylene with a particle size of 5-20 μm. imide;
    单层亲油层的厚度占保持架材料总厚度的百分比为5％-15％，亲油层包含质量百分比计的0.5％-3％的亲油组分，其余组分是粒度为20-30μm的聚酰亚胺；The thickness of the single-layer lipophilic layer accounts for 5%-15% of the total thickness of the cage material. The lipophilic layer contains 0.5%-3% lipophilic components in terms of mass percentage, and the remaining components are polyethylene with a particle size of 20-30 μm. imide;
    单层贮油层的厚度占保持架材料总厚度的百分比为25％-40％，贮油层组分是粒度为50-80μm的聚酰亚胺；The thickness of the single-layer oil storage layer accounts for 25%-40% of the total thickness of the cage material, and the component of the oil storage layer is polyimide with a particle size of 50-80 μm;
    单层疏油层的厚度占保持架材料总厚度的百分比为3％-8％；疏油层包含质量百分比计的3％-10％的疏油组分，其余组分是含有粒度小于10um的聚酰亚胺；The thickness of the single-layer oleophobic layer accounts for 3%-8% of the total thickness of the cage material; the oleophobic layer contains 3%-10% oleophobic components by mass, and the remaining components are polyamides with particle sizes less than 10um. imine;
    单层封油层的厚度占保持架材料总厚度的比例为3％-8％；封油层组分是粒度小于10um的聚酰亚胺。The thickness of a single layer of sealing oil layer accounts for 3%-8% of the total thickness of the cage material; the component of the sealing oil layer is polyimide with a particle size less than 10um.
  2. 根据权利要求1所述一种多孔分层复合控油轴承保持架材料，其特征在于：所述的聚酰亚胺为均苯型、醚酐型、酮酐型的一种或几种的组合。A porous layered composite oil-control bearing cage material according to claim 1, characterized in that the polyimide is one or a combination of benzene type, ether anhydride type and ketone anhydride type.
  3. 根据权利要求1所述一种多孔分层复合控油轴承保持架材料，其特征在于：所述的抗磨组分为聚醚醚酮、纳米青铜粉、纳米二硫化钼、纳米石墨烯、纳米金刚石中的一种或几种的组合。A porous layered composite oil-control bearing cage material according to claim 1, characterized in that: the anti-wear component is polyether ether ketone, nano bronze powder, nano molybdenum disulfide, nano graphene, nano diamond one or a combination of several.
  4. 根据权利要求1所述一种多孔分层复合控油轴承保持架材料，其特征在于：所述的亲油组分为氧化镧、氧化铈、氧化镨、氧化钕、氟化镧、氟化铈、氟化镧铈、氟化镨、氟化钕、氟化镧钕的一种或几种的组合。A porous layered composite oil-control bearing cage material according to claim 1, characterized in that: the lipophilic component is lanthanum oxide, cerium oxide, praseodymium oxide, neodymium oxide, lanthanum fluoride, cerium fluoride, One or a combination of lanthanum cerium fluoride, praseodymium fluoride, neodymium fluoride, lanthanum neodymium fluoride.
  5. 根据权利要求1所述一种多孔分层复合控油轴承保持架材料，其特征在于：所述的疏油组分为聚四氟乙烯、含氟聚氨酯中的一种或两种的组合。A porous layered composite oil-control bearing cage material according to claim 1, characterized in that: the oleophobic component is one or a combination of two of polytetrafluoroethylene and fluorine-containing polyurethane.
  6. 根据权利要求1至5任一项所述一种多孔分层复合控油轴承保持架材料，其特征在于：耐磨层的厚度占保持架材料总厚度的百分比为10％，耐磨层包含质量百分比计的2％的抗磨组分，其余组分是粒度为5-20μm的聚酰亚胺；A porous layered composite oil-control bearing cage material according to any one of claims 1 to 5, characterized in that: the thickness of the wear-resistant layer accounts for 10% of the total thickness of the cage material, and the wear-resistant layer contains a mass percentage 2% of the anti-wear component, and the remaining components are polyimide with a particle size of 5-20 μm;
    单层亲油层的厚度占保持架材料总厚度的百分比为10％，亲油层包含质量百分比计的3％的亲油组分，其余组分是粒度为20-30μm的聚酰亚胺；The thickness of the single-layer lipophilic layer accounts for 10% of the total thickness of the cage material. The lipophilic layer contains 3% lipophilic components in terms of mass percentage, and the remaining components are polyimide with a particle size of 20-30 μm;
    单层贮油层的厚度占保持架材料总厚度的百分比为30％，贮油层为粒度为50-80μm的聚酰亚胺；The thickness of the single-layer oil storage layer accounts for 30% of the total thickness of the cage material, and the oil storage layer is made of polyimide with a particle size of 50-80 μm;
    单层疏油层的厚度占保持架材料总厚度的百分比为5％；疏油层包含质量百分比计的5％ 的疏油组分，其余组分是粒度小于10um的聚酰亚胺；The thickness of the single-layer oleophobic layer accounts for 5% of the total thickness of the cage material; the oleophobic layer contains 5% by mass of oleophobic components, and the remaining components are polyimide with a particle size less than 10um;
    单层封油层的厚度占保持架材料总厚度的百分比为5％；封油层为粒度小于10um的聚酰亚胺粉料。The thickness of a single layer of sealing oil layer accounts for 5% of the total thickness of the cage material; the sealing oil layer is polyimide powder with a particle size of less than 10um.
  7. 根据权利要求1所述一种多孔分层复合控油轴承保持架材料，其特征在于：耐磨层的厚度占保持架材料总厚度的百分比为10％，耐磨层含有质量百分比计的2％的抗磨组分，其余组分是粒度为5-20μm的聚酰亚胺；所述的聚酰亚胺为均苯型，抗磨组分为石墨烯、纳米二硫化钼或者纳米青铜粉；A porous layered composite oil-control bearing cage material according to claim 1, characterized in that: the thickness of the wear-resistant layer accounts for 10% of the total thickness of the cage material, and the wear-resistant layer contains 2% by mass. Anti-wear component, the remaining components are polyimide with a particle size of 5-20 μm; the polyimide is isophenylene type, and the anti-wear component is graphene, nano-molybdenum disulfide or nano-bronze powder;
    单层亲油层的厚度占保持架材料总厚度的百分比为10％，亲油层包含质量百分比计的3％的亲油组分，其余组分是粒度为20-30μm的聚酰亚胺粉料；所述的聚酰亚胺为均苯型，亲油组分为氧化镧、氧化铈、氧化镨、氟化镧、氟化铈和氟化镨的混合物；The thickness of the single-layer lipophilic layer accounts for 10% of the total thickness of the cage material. The lipophilic layer contains 3% lipophilic components in terms of mass percentage, and the remaining components are polyimide powder with a particle size of 20-30 μm; The polyimide is of homophenylene type, and the lipophilic component is a mixture of lanthanum oxide, cerium oxide, praseodymium oxide, lanthanum fluoride, cerium fluoride and praseodymium fluoride;
    单层贮油层的厚度占保持架材料总厚度的百分比为30％，贮油层是粒度为50-80μm的聚酰亚胺；The thickness of the single-layer oil storage layer accounts for 30% of the total thickness of the cage material. The oil storage layer is polyimide with a particle size of 50-80 μm;
    单层疏油层的厚度占保持架材料总厚度的百分比为5％；疏油层包含质量百分比计的5％的疏油组分，其余组分是粒度小于10um的聚酰亚胺粉料，所述的聚酰亚胺为均苯型，疏油组分为聚四氟乙烯。The thickness of the single-layer oleophobic layer accounts for 5% of the total thickness of the cage material; the oleophobic layer contains 5% by mass of oleophobic components, and the remaining components are polyimide powders with a particle size less than 10um, as described The polyimide is homophenylene type, and the oleophobic component is polytetrafluoroethylene.
    单层封油层的厚度占保持架材料总厚度的百分比为5％，封油层是粒度小于10um的聚酰亚胺。The thickness of a single layer of sealing oil layer accounts for 5% of the total thickness of the cage material. The sealing oil layer is polyimide with a particle size of less than 10um.
  8. 制备如权利要求1所述多孔分层复合控油轴承保持架材料的方法，其特征在于：包含如下步骤：The method for preparing a porous layered composite oil-control bearing cage material as claimed in claim 1, characterized in that it includes the following steps:
    1)、根据各层厚度占比及组分质量百分比，称取不同质量的粉料，分层铺设在模具中，每层铺完后压平；1). According to the thickness ratio of each layer and the mass percentage of the components, weigh powders of different qualities, lay them in layers in the mold, and flatten each layer after it is laid;
    2)、粉料填装完毕后，将模具放在振动平台上，振动20-60秒，使各层材料界面之间自然混合；2) After the powder filling is completed, place the mold on the vibration platform and vibrate for 20-60 seconds to allow natural mixing between the material interfaces of each layer;
    3)、将模具放在液压机上，采用双向加压的方式，在3-10MPa的压力下进行预压制，保压5-30min后卸压，再将模具压制到定容的体积，并固定；3) Place the mold on the hydraulic press, use bidirectional pressure, pre-press at a pressure of 3-10MPa, maintain the pressure for 5-30 minutes and then release the pressure, then press the mold to a constant volume and fix it;
    4)、将模具放入烧结炉进行烧结，烧结温度320℃-360℃，保温45min-180min；4) Put the mold into the sintering furnace for sintering, the sintering temperature is 320℃-360℃, and the heat preservation is 45min-180min;
    5)、脱模，得到多孔分层复合控油轴承保持架材料。5) Demold and obtain the porous layered composite oil-control bearing cage material.
  9. 根据权利要求8所述多孔分层复合控油轴承保持架材料的制备方法，其特征在于：振动25-45秒，使各层材料界面之间自然混合，在5-10MPa的压力下进行预压制，保压5-20min后卸压，烧结温度为300℃-350℃，保温55min-160min。The method for preparing a porous layered composite oil-control bearing cage material according to claim 8, characterized in that: vibrate for 25-45 seconds to naturally mix the interfaces of each layer of materials, and perform pre-pressing under a pressure of 5-10MPa. Keep the pressure for 5-20 minutes and then release the pressure. The sintering temperature is 300℃-350℃ and the temperature is maintained for 55min-160min.
  10. 根据权利要求8或9所述多孔分层复合控油轴承保持架材料的制备方法，其特征在 于：振动30秒，使各层材料界面之间自然混合，在10MPa的压力下进行预压制，保压15min后卸压，烧结温度为335℃，保温90min。The method for preparing a porous layered composite oil-control bearing cage material according to claim 8 or 9, characterized by: vibrating for 30 seconds to naturally mix the interfaces of each layer of materials, pre-pressing under a pressure of 10 MPa, and maintaining the pressure. After 15 minutes, the pressure was released, the sintering temperature was 335°C, and the temperature was kept for 90 minutes.
PCT/CN2022/089827 2022-04-18 2022-04-28 Porous layered composite oil control bearing retainer material and preparation method therefror WO2023201768A1 (en)

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